(r5rs) Numbers

Info Catalog

(r5rs) Equivalence predicates

(r5rs) Standard procedures

(r5rs) Other data types

 
 6.2 Numbers
 ===========
 

Menu

 
* Numerical types
* Exactness
* Implementation restrictions
* Syntax of numerical constants
* Numerical operations
* Numerical input and output
 
 Numerical computation has traditionally been neglected by the Lisp
 community.  Until Common Lisp there was no carefully thought out
 strategy for organizing numerical computation, and with the exception of
 the MacLisp system [Pitman83] little effort was made to execute
 numerical code efficiently.  This report recognizes the excellent work
 of the Common Lisp committee and accepts many of their recommendations.
 In some ways this report simplifies and generalizes their proposals in
 a manner consistent with the purposes of Scheme.
 
 It is important to distinguish between the mathematical numbers, the
 Scheme numbers that attempt to model them, the machine representations
 used to implement the Scheme numbers, and notations used to write
 numbers.  This report uses the types number, complex, real, rational,
 and integer to refer to both mathematical numbers and Scheme numbers.
 Machine representations such as fixed point and floating point are
 referred to by names such as fixnum and flonum.
 

Info Catalog

(r5rs) Equivalence predicates

(r5rs) Standard procedures

(r5rs) Other data types